ISCDC : How to enable JCC trace?

Answer

1. Go to <CDC_Install_Dir>/conf directory and edit these two files , following a backup.

The files are:
dmts64.vmargs and dmts32.vmargs.

Original:

-Dcom.datamirror.ts.instance=%TSINSTANCE%
com.datamirror.ts.commandlinetools.script.Startup
.
Changed:
-Ddb2.jcc.tracePolling=true -Ddb2.jcc.tracePollingInterval=10
-Ddb2.jcc.propertiesFile=/<CDC_Install_Dir>/DB2JccConfiguration.properties -Dcom.datamirror.ts.instance=%TSINSTANCE%
com.datamirror.ts.commandlinetools.script.Startup

make a note that above changes should be on one line when you modify dmts64.vmargs/dmts32.vmargs file

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2. Go to the same directory i.e in this example CDC_Install_Dir is /home/cdcadmin/IBM/cdc , so create a file named DB2JccConfiguration.properties under /home/cdcadmin/IBM/cdc dir with content below, also create jcc_trace dir under /home/cdcadmin/IBM/cdc
.
db2.jcc.override.traceLevel=-1 <== no extra blanks
db2.jcc.override.traceDirectory=/home/cdcadmin/IBM/cdc/jcc_trace <== no extra blanks
db2.jcc.override.traceFile=jcc.log <== no extra blanks
.
3. Stop the CDC instance and restart it.
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4. Make sure that the tracing is enabled as above.
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5. Make sure you have enough disk space in the traceDirectory.
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6. Start the replication -- wait until the error occurs. The trace logs
generated will have the following naming convention: jcc.log_global* and will be found in your specified trace directory.
7. To turn off this trace:
a) Shutdown the CDC instance
b) Restore the original dmts64.vmargs under <CDC_Install_Dir>/conf ©8229
c) Restart the CDC instance